thanks for the excellent feedback. And I'll take up only the last line written: "I want we to succeed".

I hope everyone is fine with having this conversation in spanish as I think it would be easier for all of us to communicate more effectively with having the proper special terms and definitions at hand. Thanks for your kind understanding, a sumary in english would be in blue color.

I would therefore propose to have those differences properly handled throughout the handling of an invoice as proposed in the mockup, which is in english by the way, so have a look... https://gomockingbird.com/mockingbird/#zq0em7d

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- Have into account the variable David mentioned (Partners (You and customer - You and supplier, Products and Document(s) [Payment, receipt and Invoices])

- Computed as a tax on Account Move Line.

- It need to be recorded ad a "Document" not as a "Tax".

- frquently as Argentina (in Venezuela it happen too!) your Withholding is different even in different cities on th country and the amounts are taken from a no-monetary currency called "Fiscal Unit" (Unidad Tributaria).

In our experience even the computing the withholding itself it really complex (for some of them) and so trivials in other documents, we tried without success build an unique model for Colombia and Venezuela and the "IF's" where too much than we decided do 2 development.